I would not spend a dime on stuff from Iron Dragon. There's a lot of sketchy things about that website, the owner, the addresses, related businesses, their products, and they way they sell them. I also don't know about any third party testing for their stuff. It's highly likely that you'll be getting a fake solution. Of course for some reason they only sell their stuff in solution. They refuse to answer any technical questions about their product. Why?
This is so easily a scam.